add ppbr export dialog, implement text input focus

src/node_dialog_export_ppbr.cpp

@@ -0,0 +1,32 @@
+#include "pch.h"
+#include "log.h"
+#include "node_dialog_export_ppbr.h"
+
+Node* NodeDialogExportPPBR::clone_instantiate() const
+{
+    return new NodeDialogExportPPBR();
+}
+
+void NodeDialogExportPPBR::clone_finalize(Node* dest) const
+{
+    NodeDialogExportPPBR* n = static_cast<NodeDialogExportPPBR*>(dest);
+    n->init_controls();
+}
+
+void NodeDialogExportPPBR::init()
+{
+    auto tpl = static_cast<const NodeBorder*>(init_template("dialog-brush-upload"));
+    m_color = tpl->m_color;
+    m_border_color = tpl->m_border_color;;
+    m_thinkness = tpl->m_thinkness;;
+    init_controls();
+}
+
+void NodeDialogExportPPBR::init_controls()
+{
+    btn_ok = find<NodeButton>("btn-ok");
+    btn_cancel = find<NodeButton>("btn-cancel");
+    btn_cancel->on_click = [this](Node*) {
+        destroy();
+    };
+}